Caster for furniture



UNITED STATES J. H. W'ILHELM AND FREDK. G.

PATENT OFFICE.

ENSIGN, OF CHICAGO, ILLINOIS.

CASTER FOR FURNITURE.

To all 'whom it may conce-rn:

Be it known that we, JOHN H. WILHELM and FREDERICK G. ENsIGN, of Chicago, in

the county of Cook, in the State of Illinois,

Figure l is a longitudinal elevation of' our improved combination spring and caster for furniture. Fig. 2 is a top or plan view of the same.

The object ot' our invention is te furnish for bedsteads, chairs, and heavyv articles of furniture a combination-spring consisting of two or more curvilinear parts corresponding to each other, so constructed as to give a great extent ot' spring within a small space, and so to arrange the device that the common casterwheel with its l proper attachments or stem may be easily adjusted to it and connected with the furniture, the whole arrangement being designed to obviate a large portion of the elastic surface required in the ordinary method of upholstering. i

To enable others skilled in the art' to make and use our invention, we will describe the method of constructing and using the saine.'

A represents the upper spring, and B the lower spring, which are made in a curvilinear form, so that pressure on the upper spring, A, forces it down into a similar curve in the lower spring, B, as shown by the dotted lines w a, the object of which is to alow theV springs A B to move through considerable space without their centers coming in contact.

J represents blocks inserted between the ends of the springs A B and secured by the bolts m, for the purpose of securing the ends of the springs A B and adjusting the same at a proper distance from each other to secure the required elasticity.

Hreplcsents the socket attached to the upper spring, A, bylneans of the rivets or screws n, which is designed to be inserted into the end of, the bedstead `or furniture leg in the usual manner.

D represents the stem or.shaft of the caster\vheel E, and passes up` through theinside of the socket H when the springs A Bare pressed together. At the lower end ofthe stein or shaft D is attached the common caster-wheel E, 'which revolves in the usual manner by means 0f the socket H andaliole forming a bearing through the center of the lower part of the spring B. I

The red line F represents the eontou r ci' the lower end of the furniture-leg, in which the socket H is supposed to -be inserted.

`C shows the helical spring coiled round the stem D, between the springs A B, for the' purpose of giving additional elastic power to the device.

The metals used for the springs yA B are rolled brass or spring-steel. The blocks J are made of' either wood or metal. The other parts are made of any desired metallicsulstance.

Operation: When our device is constructed as. above described, all that remains to be done is to insert the socket H in a hole made in the usual manner in the end 'of the furniture-leg.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent of the United States, isy The combination of the curvilinear springs B, adjusted to the stem D of the caster-wheel as set forth.

.oHN H. WILHELM.; FREDERICK G. ENsIGN.

Witnesses GEO. L. CHAPIN, ALBERT HAYARD.

E and strengthened by the helical spring C, 

